Trolley-base.



C. E. GIBRDING.

TROLLEY BASE.

APPLIOATION FILED JUNE 7, 1909.

970,21 1 Patented sep1.13,'1910.

2 SHEETS-SHEET l.

'Jiga f r 1 I C. E. GIERDING.

TROLLEY BASE.

APPLIOATION EILED JUNE v, 1909.

y Patented spt. 13,1910.

eral description which follows.

Two sheets ot drawings accompany this,

of the trolley base,

Vbut er UN rrini strains CHARLES E. GIERDING. OE

PATENT orricn.

NEU/ARK. NEW JERSEY. ASSIGNOR TO STERLING-MEAKER COMPANY, OF NEWARK, NEW JERSEY. A CORPORATION OF NEW JERSEY. A

.No 802,100. dated October 1T, 1005, and a companion specification forming part of my application t'or patent tiled .August 14, 1008, and allowed December :20, 1008, Serial No. 448,507, (Letters Patent No. 928,422, dated July 20, 1000,) the present invention relates` stands or bases for adapted to be attached to the tothe construction of trolley )oles roofs o trolley cars and to render the poles swiveled, folding' and, selffelevatlng' wlth reference to the top of the car.

The present invention consists in certainl novel combinations of peculiarly constructed and arranged parts including a cushion stop, common hereto and to said companion specification and in an improved trolley base embodying such combinations or any of them, as hereinafter more particularly described and claimed.

-The leading object of the present invention is to provide a trolley base of the type set forth ,in Said patent specification,inelud ing modifications thereof, with said lcushionsto improvement.

nother object is to reduce to the utmost the minimum height of the trolley base above the roof of the car when the trolley pole is lowered to travel beneath bridges orwithin tunnels or the like.

Other objects will beset forth in the gfenspecification as part thereof.

Figure 1 is atop view Aof the improved trolley base with .its pole fork in its normal working position; Fig. 2 is a side View pro-` jected from Fig. 1; Fig. 3 is la side viewI showing the lparts as they appear when the pole fork is owered; -Fig14 '1S a side View, omitting the tensile springs at the neat` side showing the pole fork in contact with the butter fork ot' the cushion sto); Figsf :'3 and (t are detail views of said fork, detached; Figs. l and 8 are detail views of the butter spring detached;

Specification of Letters Patent.

Application filed .Tune 7. 1909.

'base in the form of an inver #bottom 10 Patented sept. 13, 191e. Serial No. 500,407.

and Fig. 0 represents an axial vertical Section through the turret and roller bearing.

liihe reference.characters rct'er to like parts in all the figures.

ln common with the parts of said pateutcd trolley base Vand the trolley base set- 'torth in said present construction includes a base proper or baseplate, a, having bolt-holes, 1, 2, 3,- and fl, which provide for boltingA itto the roof of the car, and having on top at its center a hollow cylindrical stem, 5, the periphery of which, together with an annular step, 6, Fig. 9, at its base, is adapted to interact with and support Vertical anti-fric tion rolls, 7, as in Figui); and further provided with sockets or couplings, S and 9,- Fig. 1, which may be of any known or improved form, as means for connecting the. trolley base with the electric conductors leading to the motor. The present base plate a is further constructed with a (lished middle companion specification, the

portion, `10, as shown in Figs. 2, 3 and 4, .Y

adapting its bottom, 10.', to project downward into or through the roof of the car to anyrequired exten.

The inner circumferential surface of a, cap or turret, b, interacts' with said anti-- inclosed by said turret, which is also preferably constructed as in said patented trolley Ated cup having a transverse horizontal pivot socket'll, and

'frictlon rolls 7, and the roller bearingis- -5 a horizontal or-substantially horizontal strut socket, 12, at ril ht angles to` said pivot socket andl perpendicular or Vsubstantially perpendicular to the vertical axis of the turret.v Said pivot socket.1l is preferably and conveniently located in the present construc-. tion at the front of the' turret' b, near said ga pair of guides, 12'.,l arev formed at the sides of saidstrut socket 12,v the lateral surfaces of the guides being parallel with eachother and as wide apart as the sides ofthe turret; and horizontal runways, b', Fig. 1, are formed in the kedges of vsaid guides 12' and vin the sidesof vthe turet b in line with said guides.

The turret b is nally or vertically against yaccidental-displacement, as in the patented trolley base, b au axial bolt., 13, Fig. 9, extending throng' the chamber of the hollow stem 5.' In th present construction this `bolt preferably interacts with a nut, 135, within'a recess at.

held in place longitudii the top of the turret which is covered by a cap plate, c. o y y The pole'fork, cl, as in said patented trol-.

ley base, vis pivoted to said turret I; by a horizontal pivot, 14, fitted to said transverse socket 11 of the turret and to pivot holes inthel respective sides of the fork. These pivot holes in the present construction are located at the lower extremities of the pole arranged fork, which are suitably recurved shown in Figs. 2, 3 and f1, so that they project downward in the lowered position of the-pole (Fig. 3) 'said transverse socket 11 being also located as low down as may be `convenient -upon the front of the turret so as to locate extending through perforated lugs on its respective parts. i

A crossbar, e, parallel with said horizontal pivot 14 andvsaid wrist pins 15 and 16, is supported, as heretofore, by a. central strut, f, preferably of metallic vtubing orpipe, one end ofthe strut occupying said strutsocket i 12 at the back of theturret I), within which it is seated, and its other end a like socket within a central boss, 23, on the crossbar..

The crossbar e is provided as heretofore with holes through which the screw-threaded shanks of a pair of double hooks, g and It, extend; and each of said shanks is provided with Aa pair of nuts, 24 and 25, behind the crossbar to provide for the longitudinal adjustment of the screws, and for securely locking them in their adjusted positions. Stretched from said double hooks g and it, respectively, Ato the respective wrist pins 15 and 16, as heretofore, are two pairs of tensile springs, z' and y', which are preferably of rod steel so coiled as to form conical ends within which the shanks of coupling eyes, 26 and 27, are securely held; the eyes of each spring embracing a sleeve, 15 or 16', of malleable iron or steel, on theI adjoining wrist-pin l5 or 16, .and one of the hooks ot' the opliosing double hook g or ll..

Both ends of the tubular ystrut are seated within closed sockets, and an axial tiebolt, 7c, extends through the crossbar c lengthwise of the strut f into a tapped hole, la', in the turret casting, as shown inFig. t).

The other parts of the cushion-stop device arc -a butter fork, Z--Jr/L, shown detached' by Figs and (3, and a butler spring n, shown .detached by Figs.` 7 a-nd'i8. Said buffer fork has at its rearend a central sleeve 4portion which embraces said strut 7' and is slidable thereon, and at its fron-t end a bifurcatedportion (m), the respective extremities of which,- 17 and 18', interact with the buffer surfaces 17 and 18 of the pole fork which areconvexly curved and are suitably arranged to interact with said buffer fork extremities 17 vand 18. See Fig. 4. Inwardly projecting fins, m, Figs. 5` and 6, within the buli'er fork m slide in said runways b, Fig. 1, in the guides 12 and. the sides of the turret to keep the bu ifer fork strain. 4 l v The buffer springe isV preferably andr conveniently of helicallywcoiled -rod steel, and embraces the strut f between said sleeve l,portion Z` of the buffer fork and said central boss 23 of the crossbar'e, l`atloose .collar Q3 being preferably iiiterposedbetween the spring an said boss.

Normally, when the trolley wheel( is in contactwith the overhead wire` (Fi s. land 2), as well as when the trolley pole 1s pulled .down flat upon the top of the car (Fig. 3), or occasion may require, the buffer sur? faces 17 and 18 are out of contact with said extremities 17' 'and 184 of the buffer fork Mrz/,andthe butl'er spring 'n is free from tension.

When dewirement occurs,`said butfensurfaces 17 and 18 come into contact 'with said extremities 17 and 18 of the buffer fork l-4n, as in Fig. 4, and the butter spring n from yielding `verticallyunder is compressed between said sleeve portion i ofthe butler fork and said boss Q3 of the crossbar e, and serves to-cushion the strain, so that no injury to any of the parts ofthe trolley base is likely to result.

That end of the trolley base and ofv its )arts shown at the right in Figs. 1, 2, 3 ain L1, is herein termed the front end.

'lf he circumferential outer `part of the vroller bearing, instead of a central stem, I

be formed on the base plate, as set fori/h in latent No. 539681 to Alfred Green, dated May 21,1895, or the roller bearing may be of other known or improved forms appropriate to the present lmprovement; the improved trolley base may obviously have any preferred form or number of tenysile springs; the buffer spring may, if preferred, be voluteor of any other appropriate form; and other like modifications will suggest themselves to those skilled in theart.

Having thus described said improvement,

ofeach l claim as my invention and desire to patent 1 um er thisl specification.: l

1. A trolley base having, yin combination, a base plate constructed with a dished midf d le portion, 'a turret having its vertical pivot withiii said (lished portionr and constructed with a transverse horizontalpivot' socket on its front within and near the bottom of said dished portion anda strut socket at right angles to said pivot socket 'on itsbaclr1minediately above the plane of said dished cations constructed withextremities arranged f portion, apole fork havlng recurved lower to interact with sald buil'er surfaces of the ends pivotedto said turret at said pivot pole fork and inwardly projecting fins ar" `socket withinysaid disherl portion and havranged to slide Within said runways of the "i'ng buffer surfaces at its back, a strut seated l turret. l

in said strut socket, a cross bar supported l 3. The combii ation, in a trolley base, of

by the rear end of said st-rut, connections a base plate havlng a dished middle portion,

including tensile springs between said cross l a turret mounted in said dished portion land bar and said pole fork, a butter spring em l having a vertical axis of rotation and conbracing said strut and seated on said cross structed with a transverse horizontal pivot ar, and a buffer fork having a sleeve porsocket near the bottom of said dished portion slidable on said strut in contact w1th tion' and a strut socket at rlght angles tov said butter spring and bifurcations arranged said pivot socket immediately above` the to interact with said butter surfaces ot the plane of said dished portion, a pole fork pole fork. i constructed with 'reeurvediower ends piv- 2. The combination, in a trolley buse, of oted to said turret at said ivot socket With- ,a turret havin a vertical axis of rotation in said dished portion an having c nvely and constructe with a transverse horizoncurved buffer surfaces at its backlia strut tal Ypivot socket on its front near its bottoni, seated in said strut socket, a crossbar supy a superjacent strut socketat right angles ported by the rear end of said strut, conto said pivot socket on its back, a pair of nections including tensile springs between guides at the sides of said strut socket, and said crossbar and sa'id pole fork, a buffer horizontall vrunways 1n the l plane 'of said spring embracino' Said strut and seated on guides, a pole fork pivoted to said turret at saidv crossbar and a buderA fork having a said pivot socket and having buffer surfaces sleev-portion slidable on said strut in con at its back, a strut seated 1n said strut socket, tact with said bu'er spring, arg) bifurcaa crossbar supported by the rear end of said tions arranged to interact With aid buffer strut, connections including tensile springsV surfaces of the pole fork, substantially as etweensaid erossbar and said pole fork, a hereinbefore Specified.

i i CHARLES E. GIERDIN G. ed on said crossbar, an a bui'er fork having Witnesses: i a sleeve portion' slidable on saidstrut in v EDWARD LEONARD, contant, with said fbu'er spring and bifur ELLA J. LEONARD. 

